Only when class began_____that he had left his book at home.

Only when class began_____that he had left his book at home. He left his book at home.He had to go back home ______ it. Only when he arrived home _____ that he had left his key in he had already left home when his son arrived home 改为疑问句, He was in that he left his book at home A so hurry B so hurr Only when the meeting began________ that he had left his pap He ____ his English book at home yesterday为什么是left 而不是forget He left his sister alone at home.和He left his sister at home his uncle left home when he was twenty同义句 he ran back to my class room--------he had left his books -- I left\forgOt my book at home. When I got on the bus,I_____I had left my wallet at home.